These release notes describes caveats for maintenance release Cisco IOS Release 12.4(25d)JA1. There are no new features in this release. This release supports 32-Mb autonomous Cisco Aironet 1040, 1130, 1140, 1240, 1250 and 1260 series access points, and 1300 and 1400 series access points/bridges.

Contents

Introduction

The Cisco Aironet Access Point is a wireless LAN transceiver that acts as the connection point between wireless and wired networks or as the center point of a standalone wireless network. In large installations, the roaming functionality provided by multiple access points enables wireless users to move freely throughout the facility while maintaining uninterrupted access to the network.

You can configure and monitor 520, 1040, 1100, 1130, 1140, 1200, 1240, 1250,1260 access points, and 1300 and 1400 series access points and bridges by using the command-line interface (CLI), the web-browser interface, or Simple Network Management Protocol (SNMP).

System Requirements

You can install the 32-Mb Cisco IOS Release 12.4(25d)JA1 on all 1040, 1130, 1140, 1240, 1250 and 1260 series access points. You can also install the16-Mb Cisco IOS Release 12.3(8)JEE on all 520, 1100, and 1200 series access points.

Finding the Cisco IOS Software Release

To find the version of Cisco IOS software running on your access point, use a Telnet session to log into the access point, and enter the show version EXEC command. This example shows command output from an access point running Cisco IOS Release 12.4(25d)JA1:

On access points running Cisco IOS software, you can also find the software release on the System Software Version page in the access point's web-browser interface. If your access point does not run Cisco IOS software, the software release appears at the top left of most pages in the web-browser interface.

Upgrading to a New Software Release

Follow these steps for instructions on upgrading your access point or bridge software:

Disable Radios to Prevent Unexpected Reboot When Upgrading System Software

If your access point runs Cisco IOS Release 12.2(11)JA, 12.2(11)JA1, or 12.2(11)JA2, your access point might unexpectedly reboot after you upgrade to a later Cisco IOS release. Because of a rare timing condition that affects the radios, the access point sometimes reboots immediately after the upgrade when the radios are enabled. However, after the access point reboots the upgrade is complete and the access point operates normally. To prevent the access point from rebooting unexpectedly, disable the radio interfaces before upgrading software.

Follow these steps to disable the radio interfaces using the web-browser interface:

Step 1 Browse to the Network Interfaces: Radio Settings page. Figure 1 shows the top portion of the Network Interfaces: Radio Settings page.

Figure 1 Network Interfaces: Radio Settings Page

Step 2 Select Disable to disable the radio.

Step 3 Click Apply at the bottom of the page.

Step 4 If your access point has two radios, repeat these steps for the second radio.

Beginning in privileged EXEC mode, follow these steps to disable the access point radios using the CLI:

Command

Purpose

Step 1

configure terminal

Enter global configuration mode.

Step 2

interface dot11radio {0 | 1}

Enter interface configuration mode for the radio interface. The 2.4-GHz radio is radio 0, and the 5-GHz radio is radio 1.

Step 3

shutdown

Disable the radio port.

Step 4

end

Return to privileged EXEC mode.

Step 5

copy running-config startup-config

(Optional) Save your entries in the configuration file.

If your access point has two radios, repeat these steps for the second radio. Use the no form of the shutdown command to enable the radio.

Installation Notes

This section contains information that you should keep in mind when installing 1040, 1130, 1140, 1240, 1250 and 1260 series access points, and 1300 and 1400 access points/bridges.

Access Points

This section contains installation notes for access points.

Installation in Environmental Air Space

Cisco Aironet 1040, 1130, 1140, 1240, 1250 and 1260 Series Access Points provide adequate fire resistance and low smoke-producing characteristics suitable for operation in a building's environmental air space, such as above suspended ceilings, in accordance with Section 300-22(C) of the National Electrical Code (NEC) and Sections 2-128, 12-010(3) and 12-100 of the Canadian Electrical Code, Part 1, C22.1.

Caution The power injector does not provide fire resistance and low smoke-producing characteristics and
is not intended for use in extremely high or low temperatures or in environmental air spaces such as above suspended ceilings.

Antenna Installation

For instructions on the proper installation and grounding of external antennas for 1260 series access points, refer to the National Fire Protection Association's NFPA 70, National Electrical Code, Article 810, and the Canadian Standards Association's Canadian Electrical Code, Section 54.

Warning Do not install the antenna near overhead power lines or other electric light or power circuits, or where it can come into contact with such circuits. When installing the antenna, take extreme care not to come into contact with such circuits, as they may cause serious injury or death.

Important Notes

This section describes important information about access points and bridges.

Cisco Aironet 1040 and 1260 Series Access Points

The Cisco Aironet 1040 and 1260 Series Access Points are business-class access points based on the IEEE 802.11n draft 2.0 standard. It provides reliable WLAN coverage to improve the end-user experience for both existing 802.11a/b/g clients and new 802.11n clients. The access point offers combined data rates of up to approximately 444.2 Mb/s to meet the most rigorous bandwidth requirements. Users can now rely on wireless networks to deliver a similar experience to wired networks, providing mobile access to high-bandwidth data, voice, and video applications, irrespective of their location.

Note The c1260 access point uses the "ap3g1-k9w7-tar" image.

Note The c1040 access point uses the same image as the c1140 access point, which is the "c1140-k9w7-tar" image.

Detailed information and configuration procedures for the 1040 and 1260 series access point are in Chapter 6 of the Cisco IOS Software Configuration Guide for Cisco Aironet Access Points, 12.4(25d)JA1 & 12.3(8)JEE, which is available on Cisco.com at the following URL:

CLI for Framed Access Support

Framed attribute is supported with the Autonomous 1040 and 1260 Series Access Points. A new option "framed" is added to the existing CLI "dot11 aaa authentication attributes service." This allows you to configure service types as "login" or "framed" depending on the user requirement. CLI syntax:

Russian Federation AG Regulatory Domain

The Russian Federation regulatory domain is -R. This regulatory domain is supported on the Cisco Aironet 1040 and 1260 Series Access Point platforms. The -R domain is supported on 5G radios and has new power tables and channel selections. Because the channel selections change frequently, they are not included in this document. For up-to-date information on channel settings for your access point, see the Channels and Maximum Power Settings for Cisco Aironet Autonomous Access Points and Bridges document. This document is available on cisco.com at the following URL:

Regulatory Update for Japan

The U regulatory domain supports the W52 frequency set (channels 36, 40, 44, and 48) in Japan for the Cisco Aironet 1200 and 1230 Series. This support was added for the Cisco Aironet 1130 and 1240 series in Cisco IOS Software Release 12.4(3G)JA, which shipped previously. Cisco access points specified for this new domain ship with a U domain radio. Installed J domain access points are automatically upgraded to U domain status with this release.

WGB VLAN Tagging

When this feature is enabled, the WGB removes the 802.1q header while sending the packet from a VLAN client to the wireless LAN controller (WLC). WGB gets the packet to a VLAN client without 802.1q header and WGB code has to be modified to add the 802.1q header while forwarding the frame to the switch behind WGB.

WGB updates the WLC with the wired-client VLAN information in the Internet Access Point Protocol (IAPP) Association message. WLC treats the WGB client as a VLAN-client and forwards the packet in the right VLAN interface based on the source-mac-address.

In the upstream direction, WGB removes the 802.1q header from the packet while sending to the WLC. In the downstream direction while forwarding the packet to the switch connecting the wired-client, the WLC sends the packet to WGB without the 802.1q tag and WGB adds a 4-byte 802.1q header based on the destination mac-address.

Enter this command to enable WGB VLAN tagging:

WGB(config)#workgroup-bridge unified-vlan-client ?

-replicate Enable WGB broadcast to all vlans

<cr>

MAR Support

IOS supports the Cisco 3201 Wireless Mobile Interface Card (WMIC) in the 3200 Series Mobile Access Router (MAR). It does not support the following WMIC modules:

• Cisco 3205 Wireless Mobile Interface Card (WMIC)

• Cisco 3202 Wireless Mobile Interface Card (WMIC)

Note Use the c3201-k9w7-tar autonomous image for 3201 WMIC.

WGB Wireless Client Support

The WGB wireless client support allows the WGB to retain the connectivity to wireless clients in the other radio even if it lost its uplink in the current radio.

Point-to-point and Point-to-Multipoint bridging support for 802.11n platforms

The point-to-point and point-to-multipoint bridging is supported on the Cisco Aironet 1040, 1130, 1140, 1240, 1250 and 1260 Series Access Points (802.11n platforms). The 5 GHz bands support 20- and 40-MHz and the 2.4-GHz bands support 20 MHz.

The following items are supported for AP1040 and AP1260 bridging:

•MIMO, short-range bridging (on campus or inter-building bridge deployments), with dipole and MIMO antennas (line of sight and short range) under 1 Km.

Note This is only supported using short range links and is not a replacement for the AP-1240/1300/1400 or other Bridge products.

The following items are not supported for AP1040 and AP1260 bridging:

•The distance CLI command; long-range links over 1 Km currently are not supported, so the distance command is not supported.

•Outdoor MIMO bridging using external antennas has not been fully tested and is not fully supported with this release.

Access Points are Transmitting Multicast and Management Frames

Access points running recent Cisco IOS versions are transmitting multicast and management frames at the highest configured basic rate, and is a situation that could causes reliability problems.

Access points running LWAPP or autonomous IOS should transmit multicast and management frames at the lowest configured basic rate. This is necessary in order to provide for good coverage at the cell's edge, especially for unacknowledged multicast transmissions where multicast wireless transmissions may fail to be received.

Since multicast frames are not retransmitted at the MAC layer, stations at the edge of the cell may fail to receive them successfully. If reliable reception is a goal, then multicasts should be transmitted at a low data rate. If support for high data rate multicasts is required, then it may be useful to shrink the cell size and to disable all lower data rates.

Depending on your specific requirements, you can take the following action:

•If you need to transmit the multicast data with the greatest reliability and if there is no need for great multicast bandwidth, then configure a single basic rate, one that is low enough to reach the edges of the wireless cells.

•If you need to transmit the multicast data at a certain data rate in order to achieve a certain throughput, then configure that rate as the highest basic rate. You can also set a lower basic rate for coverage of non-multicast clients.

Low Throughput Seen on 1260 Series Access Points with 16 BSSIDs Configured

If your network uses 16 BSSIDs with 1- and 2-Mbps data rates, 1260 series access points might experience very low throughput due to high management traffic.

802.11n HT Rates Apply Only to No Encryption or WPA2/AES Encryption

The 802.11n HT rates apply only to no encryption or WPA2/AES encryption. They do not apply to WEP or WPA encryption. If WEP or TKIP encryption is used, the 1250 series access points and any 802.11n Draft 2.0 clients will not transmit at the HT rates. Legacy rates (802.11a/b/g) will be used for any clients using WEP or TKIP encryption.

Layer 3 Not Supported with NAC for MBSSID

Layer 3 is not supported with NAC for MBSSID in this release.

Change to Default IP Address Behavior

Cisco IOS Releases 12.3(2)JA and later change the default behavior of access points requesting an IP address from a DHCP server:

When you connect a 1040, 1130, 1140, 1240, 1250, or 1260 series access point or a 1300 series outdoor access point/bridge with a default configuration to your LAN, the access point requests an IP address from your DHCP server and, if it does not receive an address, continues to send requests indefinitely.

Default Configuration—Radios Disabled and No Default SSID

Cisco IOS Releases 12.3(2)JA and later change the radio or radios to be disabled by default; there is no default SSID. You must create an SSID and enable the radio or radios before the access point allows wireless associations from other devices. These changes to the default configuration improve the security of newly installed access points.

Clients Using WPA/WPA2 and Power Save May Fail to Authenticate

Certain clients using WPA/WPA2 key management and power save can take many attempts to authenticate or, in some cases, fail to authenticate. Any SSID defined to use authentication key-management WPA, coupled with clients using power save mode and authenticating using WPA/WPA2 can experience this problem.

A configure level command, dot11 wpa handshake timeout, can be used to increase the timeout between sending the WPA key packets from the default value (100 ms) to a value between 101 and 2000 ms. The command stores its value in the configuration across device reloads.

Default Username and Password Are Cisco

When you open the access point interface, you must enter a username and a password. The default username for administrator login is Cisco, and the default password is Cisco. Both the username and password are case sensitive.

Some Client Devices Cannot Associate When QoS Is Configured

Some wireless client devices, including Dell Axim handhelds and Hewlett-Packard iPaq HX4700 handhelds, cannot associate to an access point when the access point is configured for QoS. To allow these clients to associate, disable QoS on the access point. You can use the QoS Policies page on the access point GUI to disable QoS or enter this command on the CLI:

ap(config-if)#no dot11 qos mode

Some Devices Disassociate When Multiple BSSIDs Are Added or Deleted

Devices on your wireless LAN that are configured to associate to a specific access point based on the access point MAC address (such as client devices, repeaters, hot standby units, or workgroup bridges) might lose their association when you add or delete a multiple BSSID. When you add or delete a multiple BSSID, check the association status of devices configured to associate to a specific access point. If necessary, reconfigure the disassociated device to use the BSSID new MAC address.

Enabling MBSSIDs Without VLANs Disables Radio Interface

If you use the mbssid configuration interface command to enable multiple BSSIDs on a specific radio interface but VLANs are not configured on the access point, the access point disables the radio interface. To re-enable the radio, you must shut down the radio, disable multiple BSSIDs, and re-enable the radio.

This example shows the commands that you use to re-enable the radio:

AP1260AG(config)# interface d1

AP1260AG(config-if)# shut

AP1260AG(config-if)# no mbssid

AP1260AG(config-if)# no shut

After you re-enable the radio, you can enable VLANs on the access point and enable multiple BSSIDs.

Cannot Set Channel on DFS-Enabled Radios in Some Regulatory Domains

Access points with 5-GHz radios configured at the factory for use in Europe, Singapore, Korea, Japan, Taiwan, and Israel now comply with regulations that require radio devices to use Dynamic Frequency Selection (DFS) to detect radar signals and to avoid interfering with them. You cannot manually set the channel on DFS-enabled radios configured for these regulatory domains.

Cisco 7920 Phones Require Firmware Version 1.09 or Later When Multiple BSSIDs Are Enabled

When multiple BSSIDs are configured on the access point, Cisco 7920 wireless IP phones must run firmware version 1.09 or later.

If client devices on your wireless LAN cannot use certain network applications or cannot browse to Internet sites, you might need to adjust the MTU setting on the client devices or other network devices. For more information, refer to the Tech Note at this URL:

TACACS+ and DHCP IP Address Sometimes Locks Out Administrators

When you configure an access point for TACACS+ administration and to receive an IP address from the DHCP server, administrators might be locked out of the access point after it reboots if the administrator does not have a local username and password configured on the access point. This issue does not affect access points configured with a static IP address. Administrators who have been locked out must regain access by resetting the unit to default settings.

Access Points Do Not Support Loopback Interface

Non-Cisco Aironet 802.11g Clients Might Require Firmware Upgrade

Some non-Cisco Aironet 802.11g client devices require a firmware upgrade before they can associate to the 802.11g radio in the access point. If your non-Cisco Aironet 802.11g client device does not associate to the access point, download and install the latest client firmware from the manufacturer's website.

Throughput Option for 802.11g Radio Blocks Association by 802.11b Clients

When you configure the 802.11g access point radio for best throughput, the access point sets all data rates to basic (required). This setting blocks association from 802.11b client devices. The best throughput option appears on the web-browser interface Express Setup and Radio Settings pages and in the speed CLI configuration interface command.

Use Auto for Ethernet Duplex and Speed Settings

We recommend that you use auto, the default setting, for both the speed and duplex settings on the access point Ethernet port. When your access point receives inline power from a switch, any change in the speed or duplex settings that resets the Ethernet link reboots the access point. If the switch port to which the access point is connected is not set to auto, you can change the access point port to half or full to correct a duplex mismatch, and the Ethernet link is not reset. However, if you change from half or full back to auto, the link is reset, and, if your access point receives inline power from a switch, the access point reboots.

Note The speed and duplex settings on the access point Ethernet port must match the Ethernet settings on the port to which the access point is connected. If you change the settings on the port to which the access point is connected, change the settings on the access point Ethernet port to match.

Use force-reload Option with archive download-sw Command

When you upgrade access point or bridge system software by entering the archive download-sw command on the CLI, you must use the force-reload option. If the access point or bridge does not reload the flash memory after the upgrade, the pages in the web-browser interface might not reflect the upgrade. This example shows how to upgrade system software by using the archive download-sw command:

Radio MAC Address Appears in ACU

When a Cisco Aironet client device associates to an access point running IOS software, the access point MAC address that appears on the Status page in the Aironet Client Utility (ACU) is the MAC address for the access point radio. The MAC address for the access point Ethernet port is printed on the label on the back of the access point.

Radio MAC Address Appears in Access Point Event Log

When a client device roams from an access point (such as access point alpha) to another access point (access point bravo), a message appears in the event log on access point alpha stating that the client roamed to access point bravo. The MAC address that appears in the event message is the MAC address for the radio in access point bravo. The MAC address for the access point Ethernet port is on the label on the back of the access point.

Mask Field on IP Filters Page Behaves the Same As in CLI

In Cisco IOS Release 12.2(8)JA and later, the mask that you enter in the Mask field on the IP Filters page in the access point GUI behaves the same way as a mask that you enter in the CLI. If you enter 255.255.255.255 as the mask, the access point accepts any IP address. If you enter 0.0.0.0, the access point looks for an exact match with the IP address that you entered in the IP Address field.

Repeater Access Points Cannot Be Configured as WDS Access Points

Repeater access points can participate in WDS, but they cannot provide WDS. You cannot configure a repeater access point as a main WDS access point, and if a root access point becomes a repeater in fallback mode, it cannot provide WDS.

When Cipher Is TKIP Only, Key Management Must Be Enabled

When you configure TKIP-only cipher encryption (not TKIP + WEP 128 or TKIP + WEP 40) on any radio interface or VLAN, every SSID on that radio or VLAN must be set to use WPA or CCKM key management. If you configure TKIP on a radio or VLAN but you do not configure key management on the SSIDs, client authentication fails on the SSIDs.

Cisco CKM Supports Spectralink Phones

Cisco CKM (CCKM) key management is designed to support voice clients that require minimal roaming times. CCKM supports only Spectralink and Cisco 7920 Version 2.0 Wireless Phones. Other voice clients are not supported.

Non-Cisco Aironet Clients Sometimes Fail 802.1x Authentication

Some non-Cisco Aironet client adapters do not perform 802.1x authentication to the access point unless you configure Open authentication with EAP. To allow both Cisco Aironet clients using LEAP and non-Cisco Aironet clients using LEAP to associate using the same SSID, you might need to configure the SSID for both Network EAP authentication and Open authentication with EAP.

Pings and Link Tests Sometimes Fail to Clients with Both Wired and Wireless Network Connections

When you ping or run a link test from an access point to a client device installed in a PC running Microsoft Windows 2000, the ping or link test sometimes fails when the client has both wired and wireless connections to the LAN. Microsoft does not recommend this configuration. For more information, refer to Microsoft Knowledge Base article 157025 at this URL:

Layer 3 Mobility Not Supported on Repeaters and Workgroup Bridges

WLSM Required for Layer 3 Mobility

You must use a Wireless LAN Services Module (WLSM) as your WDS device in order to properly configure Layer 3 mobility. If you enable Layer 3 mobility for an SSID and your WDS device does not support Layer 3 mobility, client devices cannot associate using that SSID.

The Cisco Aironet 1250 and 1140 Series Access Points Have a Hardware Limitation

The beacons on the Cisco Aironet 1250 and 1140 Access Points can only have output at intervals that are multiples of 17 milliseconds. When these access points are configured for a 100 millisecond beacon interval, they transmit beacons every 102 milliseconds. Similarly, when the beacon interval is configured for 20 milliseconds, these access points transmit beacons every 17 milliseconds.

Potential RFC 3748 Violation

When the following command is configured under the SSID settings (for LEAP authentication):

authentication client username <WORD> password [0 | 7] <LINE>

If the first access-challenge returned by the Radius server after the access-request from the access point is not for the LEAP method but for EAP-MD5, the acces point violates RFC 3748.

Instead of sending an EAP NAK requesting LEAP authentication, the access point sends the user's credentials with EAP-MD5 and drops the derived keys, since it cannot read the EAP-MD5 from the access-accept.

This violates RFC 3748.

The workaround for this is to use the commands dot1x credentials and dot1x eap profile for LEAP authentication.

Caveats

This section lists Open Caveats and Resolved Caveats for access points and bridges in Cisco IOS Release 12.4(25d)JA1. For your convenience in locating caveats in Cisco's Bug Toolkit, the caveat titles listed in this section are drawn directly from the Bug Toolkit database. These caveat titles are not intended to be read as complete sentences because the title field length is limited. In the caveat titles, some truncation of wording or punctuation might be necessary to provide the most complete and concise description. The only modifications made to these titles are as follows:

•Commands are in boldface type.

•Product names and acronyms may be standardized.

•Spelling errors and typos may be corrected.

Note If you are a registered cisco.com user, view Bug Toolkit on cisco.com at the following website:

http://www.cisco.com/support/bugtools

To become a registered cisco.com user, go to the following website:

http://www.cisco.com/RPF/register/register.do

Open Caveats

Table 1 lists caveats that are open in Cisco IOS Release 12.4(25d)JA1.

11n APs stop transmitting and receiving with spike in noise/interference

CSCth59030

AP1140 crash in radio status check task

CSCth87458

SSH: Memory leak in ssh_buffer_get_string

CSCti71982

AP should sends Deauth packet instead of Auth of status code 0x000c.

CSCti91754

APs show 100% Tx Utilization on controller even with small load

CSCti98577

configuring eap-tls on wgb crash and traceback observed.

CSCtj55649

Delay in packet transmission causing beacon outages on non-11n APs

CSCtj83685

A-IOS AP MAC filtering feature inconsistent..

CSCtj97575

AP1130 Unexpected vector 1100 due to Dot11 process_one_rx_packet

CSCtk07821

WGB: M1 retransmission is interpreted as M3 incorrectly

CSCtk48151

AP3502 crash:0x1024__start(0x4000)+0xffffd024

CSCtk77013

WGB and AP cpu utilization spikes due to AiroIAPP protocol

CSCtl53167

AP801x-P-K9 Radio interface stuck in reset on 12.4(25d)JA

CSCtl98313

1141N AP displays ghost client sessions

CSCtn13199

1140 crash in dot11_driver_fwd_ba_pak

CSCtn14264

DFS Failure on Fenway

CSCtn22335

WGB sends traffic to previous AP after CCKM failure

CSCtn52814

More clients than "max-associations N" associate to AP

CSCtn87149

WGB crashes while configuring antenna gain

CSCtn88946

I/O Memory leak observed on the Root and Non Root Bridges

CSCtn95409

ANonce is different in Message 1 retry

CSCto01010

Authentication Cache function doesn't work properly

CSCto25153

Inter-client communication breaks with TKIP and broadcast-key change

CSCto82204

WGB fails to communicate after it reassociated RootAP

CSCto86289

Configuring wpa2-dot1x Crash and traceback observed on wgb.

CSCtq01790

WGB mobile station channel change command by SNMP

CSCtq29419

Hotstandby repeater AP not getting Ip address.

CSCtq33833

12.4(25d)JA WGB sends multicast frame back to connected switchport

CSCtq73992

Reload host router when ap801 fails FIPS power-on self-test

If You Need More Information

If you need information about a specific caveat that does not appear in these release notes, you can use the Cisco Bug Toolkit to find select caveats of any severity. Click this URL to browse to the Bug Toolkit:

Obtaining Documentation, Obtaining Support, and Security Guidelines

For information on obtaining documentation, obtaining support, providing documentation feedback, security guidelines, and also recommended aliases and general Cisco documents, see the monthly What's New in Cisco Product Documentation, which also lists all new and revised Cisco technical documentation, at:

Cisco and the Cisco logo are trademarks or registered trademarks of Cisco and/or its affiliates in the U.S. and other countries. To view a list of Cisco trademarks, go to this URL: www.cisco.com/go/trademarks. Third-party trademarks mentioned are the property of their respective owners. The use of the word partner does not imply a partnership relationship between Cisco and any other company. (1110R)

Any Internet Protocol (IP) addresses used in this document are not intended to be actual addresses. Any examples, command display output, and figures included in the document are shown for illustrative purposes only. Any use of actual IP addresses in illustrative content is unintentional and coincidental.